Store and display Tweet created_at from classifier.
Don't limit the classifier results.
Rspec for testing.
Basic tests for models.
Fetching tweets now looks at id_str instead of created_at date. Also,
we're storing tweet_created_at date in the db.
Strip out non-UTF-8 characters in tweet that were causing the fetcher to
crash.
Updated to Rails 3.2.13
Missing a comma.
Tweet examples select field, and character count.